Doors Open Ontario

David Dunlap Observatory Doors Open Richmond Hill

David Dunlap Observatory

Since 1935, this observatory has been a research centre for the University of Toronto's Department of Astronomy and Astrophysics and a facility for public education and outreach. A popular site for Doors Open Richmond Hill in 2019, the David Dunlap Observatory gives us a glimpse into the skies above us from a spectacular facility. During Digital Doors Open, take a virtual tour of the site through the video below. Also, enjoy a short history of the site from the Royal Astronomical Society of Canada. Or learn how to use a star finder to find your way around the night skies.

Tell us your story about this site

  • Digital Doors Open
  • Virtual tour
  • Video
  • Activities and games
  • Kid-friendly
  • Site is protected by the Ontario Heritage Trust

Contact info

123A Hillsview Drive
Richmond Hill, Ontario


Year built: 1935
Architect: Mathers and Haldenby
Architectural style: Beaux arts
Building type: Attraction, Educational facility, Historical landmark
Landscape: Garden, Park

Dates/hours open

Friday January 1 – Friday December 31, 2021
Part of Digital Doors Open Richmond Hill

David Dunlap Observatory 123A Hillsview Drive